Range-boiler cover



G. ARTHUR RANGE BOILER GVER Filed NOV. 8, 1925 oo omoio lo o ooo o o o o o Patente my 1, .1925. UNIT ED vs1' ouv nr'vrrrun, or sromma sPoxANE, wAsHrNGroN,

1,544,193.-l Aires PATENT, OFFICE.

WASHINGro-N, AssIGNon To An'rinnrownnn oo., or

A CORPORATION orl WASHINGTON.

viaaimranomnia Govan.

' Application-*filed November whichmay be attached to and detachedfrom the, boiler, and 'in the most preferred v-embodiment of my invention, the cover is split into; longitudinal sections.;

Some range boilers are welded and have continuoggisly smooth peripheries while other Vboilers are riveted and have at the .top and bottoman annular row of rivet heads and also a longitudinally 'extending line of rivet heads. My invention is designed'for eitherl type of boiler.A These boilersVA are not absolutely uniform .in diameter, as regards given' sizes, any one size varying up to one half an inch in diameter. Now-it will be clear that in either the riveted type or welded type there would always be a slight .i space between the cover and the .boiler through which air would circulate as it 1s necessary, from amanufacturing standpoint, to make the sections of a slightly larger size, or over size, 'for the reason that the edges must abut, and forthe further reasonthat a.

l given or stock size of cover will vary'slightly from the size which it should be. Thus,

there 1s a variation in both the boilers and the covers.

Now it is, a feature of my invention to `provide .the cover sections with radially inwardly extending shoulders radapted not only to seat on the upper edge-of the boiler and close the intervening space, -tion as supports for the cover sections to hold the latterin but also to funci roper vertical relation to the boiler n ot on y during but after installation is made.

It is 'now common practice to employ a band-like or patch like.electric vheater to boilers of this type, and ofcourse these heaters project from the periphery of the boiler .towhich they are applied. Now it is a feature of my invention to prevent what would otherwise bev a bulge in the cover, by vrecessing the latter on the interior of lthe sectioiis in order to accommodate these heattion Von top of the boiler,

of 'projecting' rivet 8,1923. *seriai No. 673,623.

ers and at the same time afford a uniform diameter and appearance onthe exteriorof the cover..

I t is important to insulate the top area of the boiler against tion to the perip ery thereof, and because of the pipe"connections andthe crown-like'- curvature of the boiler top,1itha s been the practice to employv an initially plastic mate'-, rial such forms a most effective insulation against heat radiation. 'Nowin order to prevent the inwardly projecting shoulder of my improved -cover from adhering to the insulader witha materialwhlch -willv not adhere to the magnesiteor other plastic material used, whereby the sections of my cover may be 4removed atany time to repair theheater Without disrupting thehardenedvpiasa@ 'ma 75 y terial.

The device of my invention has many other features which will be more fully described in connection with the accompany-Q ing drawingand which will be more partic- 8 ularly pointedA out in and by the appended. claims.

In the drawing Fig. 1, is a view in side elevation showingV one form of iny improved cover applied to S5' 'f a riveted range boiler,'-the coverrbeing `1n section. l

Fig. 2, is an enlarged sectional view `of the upper end ofthe boiler showing more cl'early'the overhanging shoulder. i

Fig. 3, is a fragmentary sectional view of 'theboiler and cover illustrating' the manner in which the electric heater is accommodated.

Fig. :4,"is 'a perspective view of one section'of the improved cover. v Fig. 5, is a sectional view Fig. 2.`

Like characters ofv referencel designate similar parts throughout the diii'erentfigures of the drawing. I have shown my inventionl applied to a riveted range boiler designated at 1, having upper and lower annular rowsof projecting rivet heads 2 and 3. Av longitudinal row .on line 5?-5 of The head 5, of the boiler is secured-by the upper row of rivets and laps the interior of the boiler vl, thereby leaving an exterior annula shoulder 6. A similar shoulder is also `afforded on thev welded boilers.

heatradiation, in addias 'magnesite, whichwhen hard, 65 i I facev the shoulheads is shown at Il. l

The usual l pipes 7, extend through the head 5, and this fact, `togetheriwith the fact that the top is rounded, presents certain difficulties in inthat.` the heater 39 periphery of the boilera/ distance equal to with electric water heaters, I have shown the boiler 1 with a band-like heater 9, ap'- plied circumferentially thereto, in the usual way and in the fusual elevation lwith respect to the heighto-f thea/boiler. It will be clear I'wilicproject from the the thickness of the heater, as wil-l be clearly seen in Fig. 3. The heater is vertically located on'the boiler in accordance with the height ofthe column of hot water desired, the loca-tion shown, being the usual one, as stated.

'My improved cover is shown formed of two longitudinal sections,

shown detached in Fig. 4. Each section is vshown provided with an inwardly projecting ledge or shoulder 10, at the top thereof. The inner wall 11, of said shoulder is faced v with a non-adhering substance such as oiled paper, 12, or the like. Abreast of the usualI position ofI an electric heater, the cover seci recessed walls of the cover and the heater# asshown in Fig. 3. By

tions are recessed as indicated at 13 to form an annular chamber. Because of Ithe fact -that these heaters vary-in size, I do not make this recessed feature with a view of causing the -cover to support the heater by engaging the same either below, above or on the periphery 4of thev heater. In fact I make the recess larger than the largest heater so that there-will be some space between the reason of the an-4 nular chamber, it will be seen that the 'over sections may be installed and the Vheater accommodated irrespective of the `circumfferential location of the cover sections with respect to the heater. t

VVhenthe half` sections are Y ted to the boiler, they are first disposed about the same and are hung onto the boiler by means of the engagement of the shoulders 10, with by any suitable means such as a sections cannot' be made.

'band at 15, in Fig.

support the are bound sheet metal band so as to dispose the edges 14|, int-ight abutting contact. I` have-shown a metal N ow because ofthe fact that the cover the top edge 6. This serves Ito cover sections while the latter cura-telg, and because of variation in size of the l oilers asregards diameter, I make the cover sect-ionsslightly over size so that bottom, as

' wit-h the boiler unless one of which is .4

racines Ywhen they are applied to a boiler, and tightened with a band or other means, the edges 14, of the two sections will always be in tight abutting contact.y Hence, there will be a certain amount of space between the interior of the coverand the periphery of the boiler. If this space were open at the top, the air and' new air or cold air would enter at the designated' at 16. This circulation of air would o'fjcourse result in loss of heat, thereby cuttingdown lthe efficiency of the cover. However, vwith the shoulder 10, tightly engaging the edge 6, the escape 4of air upwardly through the top is cut off, and whatever air is between the cover and boiler is not circulating and hence does not cause any loss of elrciency. The space which is present between the cover and boiler on a riveted boiler, is generally no greater than on a welded boiler. However, it will be noted that the projecting' rivets extending annularly and longitudinally of the boiler, would prevent perfect contact of a cover the cover was bendable or flexible, as in the case of a blanket, and even then, perfect contact could not be obtained.

My improved cover is to all intent-s and` 95 purposes a rigid structure without any ape preciable flexibility. In practice,tl1e cover is made in the form of a cylinder and later sa-wed into two separate sections as shown. I preferably employ what is known as corrugated paper, which is rolled to form and all abutting areas glued thereby making the finished structure substantially rigid. The thickness of the inches. 'Now the corrugated paper is arranged to vdispose the co-rrugations 4length- Wise'of the'cover, o r in other words, vertically'disposed when t-he cover is installed. .flhus, there is formed orl provided a. multitude of longitudinal air spaces -17, running vertically thro-ugh the cover. ,l I consider it a feature ofy the invention to close these spaces at the upper end of the cover, and I f preferably do this .by applying an initially plastic material such as magnesite, as shown vat 18. Enough is applied so that some will run down the'spaces to some extent thereby ensuring complete closure. I lmay say that finished cover is about threeA would be heated and would rise lon the extension 119, is built onto the cover and is preferably of the-same material and is likewise closed to prevent circulation in the same manner. Now when the cover sections are first placed in position, the extension 19, forms -awall about the top 5, in to which the plastic material l8 is disposed. After the same, hardens, it is'possible to readity remove the cover 'sections without disrupting the hardened magnesite, thereby avoiding what would otherwise be-necessary repairs tothe same.

' In addition to recessing the cover at 113,

.. y portance the heater 9, I .also insulate to accommodate 'the cover froni'the heater so that in ease-.the

indie-ated atj1'8, but by thomaterial height .of the tirely closed. rl`his renders the insulation againstradiation still more etfectiv-e.,;As regards the innermost spaces closed by the material 2l, this is not of sue-h great imbecause these spaces arefabreast of the cold area of the boiler l.

It is believed thatfmy invention will be fully understood from the foregoing description and while I have herein shown one specilic form of my invention, I do not wish to be limited thereto except for such limitations as the claims may import.

I claimt- 1.A cover for a rai'ipelioiler having peripherallv projecting rivet heads iicai'its top and bottoni and longitudinally thereof, comprising in combination, longitudinal cover halt means tor holding said sections against the rivet heads of said. boiler, and said sections having' seiii'i-'aniiular and inwardly project-- .ing and supporting` shoulders overhanging and engaging the top end of said boiler and thereby preventing air circulation between thi,` periphery of said boiler and the interior of said cover.

heat-er, means for holding;` against the. rivet heads of said boiler, and

said .sections vlia-ving inwardly projecting supporting shoulders oi-eihanging and eii-,M

raging the top end of said boiler and therepi'eventing air circulation between the pe; riphery of said boilcr'and the interior of said cover.

3. A range boiler cover comprising, cover i cover,

as shown at 20, 2l vand 22.

closed not only at water,` that is above they heater f), the innermost spaces will vbe enseetioiis' shaped to be disposed. about and peripherallv enclose the boiler,"

v,sections adaptedto be disposed about and periphera-lly housethe boiler, said sections being made up of laminated material having' air spaces extending longitudinally of said and means for closing said air spaces at the topof said cover to prevent eirculation ofair through said spaces, 4. As a. means of covering; a range boiler, a sectional cover peripherally housing the boiler` substantially throughout thel heightA thereof, the upper port-ionof saidcover extending above the top edge of said boiler and having a radially inward extension forming a downwardly .facing` supporting shoulder orerhanging and seating o-n the top edge of said boiler and alsoforming an annular wall surrounding the top of said boiler, 'an init-ially plast-ic material covering the top of said boiler and filling the spacewitliin said annular wall, and said lannular wall havingl a. non-adhering facing' to prevent the plastic material from adhering' thereto, whereby said cover sections may be removed without disrupting said material.

A 'range boiler equipped with a bandlike. heater, in. combination withI a cover made up of laminations having air spaces extending` longitudinally of said cover, said cover having an internally recessed portion to acc-oniiiiodate said heater, means facing said recessed portion and closing the adjacent terminals of the-radially innermost series of air spaces, and means for closing the top of sia-id cover whereby said innermost Seriesof air spaces will contain only dead air.

(i. A range boiler cover comprising, cover sections adapted to be disposed about and peripherally house the boiler, said sections beine formed ot' a. material having` air spaces, and said 4sections having supporting shoulders engaging the top edge of the boiler to prevent air circulation between the cover and the periphery ofY the boiler.

7. A range, boiler comprising` substantially rigid cover sections formed of heat'iiisulatf ingmaterial and adapted to be disposed about a boiler tohouse the latter, and said sections having' supporting` shouldersadaptedvto engage the top of said boiler lo sup-v port the sections while the'latter are being and after the` same are installed, and said (ltry shoulders closing the top of the intervening space betweenthe installed coverandthe periphery of said boiler.

GUY ARTHUR. 

